6487279 has 2 divisors, whose sum is σ = 6487280. Its totient is φ = 6487278.

The previous prime is 6487267. The next prime is 6487297. The reversal of 6487279 is 9727846.

Together with next prime (6487297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6487279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6487259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3243639 + 3243640.

It is an arithmetic number, because the mean of its divisors is an integer number (3243640).

Almost surely, 2^6487279 is an apocalyptic number.

6487279 is a deficient number, since it is larger than the sum of its proper divisors (1).

6487279 is an equidigital number, since it uses as much as digits as its factorization.

6487279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 43.

The square root of 6487279 is about 2547.0137416198. The cubic root of 6487279 is about 186.5037314742.

The spelling of 6487279 in words is "six million, four hundred eighty-seven thousand, two hundred seventy-nine".